CDT to AHDT Converter
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Quick answers
Selected conversion
7:00 am07:00 CDT (UTC-5), Oct 23, 2026 = 3:00 am03:00 AHDT (UTC-9), Oct 23, 2026
CDT is 4 hours ahead of AHDT.
CDT and AHDT examples
These examples always use CDT (UTC-5) and AHDT (UTC-9). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
CDT is 4 hours ahead of AHDT.
How the time difference changes
For most of the year, CDT is 4 hours ahead of AHDT. From Nov 1, 2026 to Mar 14, 2027, CST is 3 hours ahead of AHDT.
For most of the year, working hours of 9:00 am to 6:00 pm in CDT correspond to 5:00 am to 2:00 pm in AHDT. At other times of the year, working hours of 9:00 am to 6:00 pm in CST correspond to 6:00 am to 3:00 pm in AHDT.For most of the year, working hours of 09:00 to 18:00 in CDT correspond to 05:00 to 14:00 in AHDT. At other times of the year, working hours of 09:00 to 18:00 in CST correspond to 06:00 to 15:00 in AHDT.
Compare CDT time with AHDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Central Daylight Time is 4 hours ahead of Alaska-Hawaii Daylight Time.
7:00 am07:00 in CDT is 3:00 am03:00 in AHDT
CDT to AHDT call time
Best time for a conference call or a meeting is between 1pm-6pm13:00-18:00 in CDT which corresponds to 9am-2pm09:00-14:00 in AHDT
7:00 am07:00 Central Daylight Time (CDT). Offset UTC -5:00 hours
3:00 am03:00 Alaska-Hawaii Daylight Time (AHDT). Offset UTC -9:00 hours
7:00 am07:00 CDT / 3:00 am03:00 AHDT
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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Central Daylight Time
Offset: CDT is 5 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: Canada, Mexico, United States
Principal Cities: The largest city in the CDT time zone is Chicago in the United States, with about 2.664 million people. Other major cities in this time zone include Houston, San Antonio, Dallas, Fort Worth.
French: HAC - Heure Avancée du Centre
Spanish: CT - Zona Centro
Today all shaded areas are on CDT.
Daylight Saving: Central Daylight Time (CDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Central Standard Time (CST).
Start: Central Daylight Time (CDT) started on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00. Daylight saving starts annually on the second Sunday of March.
End: Central Daylight Time (CDT) ends on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the first Sunday of November.
See USA daylight saving time and upcoming clock changes worldwide.
CDT representations, usage and related time zones
- -05 - basic short
- -0500 - basic
- -05:00 - extended
- -0500 - sign character (-) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the west of the zero meridian.
- Romeo - Military abbreviation for CDT
- R - short form of 'Romeo'
- America/Chicago
- America/Indiana/Knox
- America/Indiana/Tell_City
- America/Knox_IN
- America/Matamoros
- America/Menominee
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- America/Ojinaga
- America/Rainy_River
- America/Rankin_Inlet
- America/Resolute
- America/Winnipeg
- CST6CDT
- Canada/Central
- US/Central
- US/Indiana-Starke
- Central Daylight Time - UTC -5
- Cuba Daylight Time - UTC -4
- CDT - Central Daylight Time
- EST - Eastern Standard Time
- ET - Eastern Time
- COT - Colombia Time
- CST - Cuba Standard Time
- EASST - Easter Island Summer Time
- ECT - Ecuador Time
- PET - Peru Time
- R - Romeo Time Zone
Alaska-Hawaii Daylight Time
Offset: AHDT is 9 hours behind Greenwich Mean Time (GMT).
AHDT representations, usage and related time zones
- -09 - basic short
- -0900 - basic
- -09:00 - extended
- -0900 - sign character (-) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the west of the zero meridian.
- Victor - Military abbreviation for AHDT
- V - short form of 'Victor'
- AKST - Alaska Standard Time
- AHDT - Alaska-Hawaii Daylight Time
- HADT - Hawaii-Aleutian Daylight Time
- GAMT - Gambier Time
- HDT - Hawaii Daylight Time
- V - Victor Time Zone